diff --git a/lib/mess/renderer.js b/lib/mess/renderer.js
index 1c30b99..24c3fbe 100644
--- a/lib/mess/renderer.js
+++ b/lib/mess/renderer.js
@@ -37,7 +37,7 @@ mess.Renderer = function Renderer(env) {
          */
         ensureSRS: function(m, callback) {
             Step(
-                function() {
+                function autodetectSRS() {
                     var group = this.group();
                     var autodetect = _.filter(m.Layer, function(l) { return !l.srs; });
                     _.each(autodetect, function(l) {
@@ -72,7 +72,7 @@ mess.Renderer = function Renderer(env) {
                     // If no layers missing SRS information, next.
                     autodetect.length === 0 && group()();
                 },
-                function(err) {
+                function waitForDetection(err) {
                     m.Layer = _.filter(m.Layer, function(l) { return l.srs; });
                     callback(err, m);
                 }
@@ -91,7 +91,7 @@ mess.Renderer = function Renderer(env) {
         localizeExternals: function(m, callback) {
             var that = this;
             Step(
-                function() {
+                function downloadExternals() {
                     var group = this.group();
                     m.Layer.forEach(function(l) {
                         if (l.Datasource.file) {
@@ -108,7 +108,7 @@ mess.Renderer = function Renderer(env) {
                     // Continue even if we don't have any layers.
                     group()();
                 },
-                function(err) {
+                function waitForDownloads(err) {
                     callback(err, m);
                 }
             );
@@ -123,7 +123,7 @@ mess.Renderer = function Renderer(env) {
         localizeStyle: function(m, callback) {
             var that = this;
             Step(
-                function() {
+                function downloadStyles() {
                     var group = this.group();
                     m.Stylesheet.forEach(function(s, k) {
                         if (!s.id) {
@@ -137,7 +137,7 @@ mess.Renderer = function Renderer(env) {
                     });
                     group()();
                 },
-                function(err, results) {
+                function waitForDownloads(err, results) {
                     callback(err, m);
                 }
             );
@@ -156,7 +156,7 @@ mess.Renderer = function Renderer(env) {
         style: function(m, callback) {
             var that = this;
             Step(
-                function() {
+                function loadStyles() {
                     var group = this.group();
                     m.Stylesheet.forEach(function(s) {
                         if (s.id) {
@@ -168,7 +168,7 @@ mess.Renderer = function Renderer(env) {
                         }
                     });
                 },
-                function(e, results) {
+                function compileStyles(e, results) {
                     var options = {},
                         group = this.group();
                     for (var i = 0, l = results.length; i < l; i++) {
@@ -193,7 +193,7 @@ mess.Renderer = function Renderer(env) {
                         });
                     }
                 },
-                function(err, res) {
+                function waitForCompilation(err, res) {
                     callback(err, m, res);
                 }
             );